Titanium, zirconium, and tin tellurites



United States Patent 3,053 616 TITANIUM, ZIRCONIUM: AND TIN TELLURITES Gerhard Bayer, Hinteregg, Zurich, Switzerland, assignor to Owens-Illinois Glass Company, a corporation of Ohio No Drawing. Filed Nov. 23, 1960, Ser. No. 71,142 4 Claims. (CI. 23-50) This invention relates to new metal tellurites, and to methods for their preparation.

An object of the present invention is to provide new crystalline compounds, tellurites of titanium, zirconium and tin. Another object of the invention is to provide methods for the production of these new compounds. Still another object of the invention is to provide new ceramic pigments. Other objects of the invention will become apparent from a study of the accompanying disclosure.

According to the v present invention, I have now discovered new metal 'tellurites oi the formula "Ice phere (e.g., air). Temperatures of firing are from about 600 to about 700 C., usually not above 650 C. The solid-state reaction takes place during the firing, after which the compound is cooled to room temperature.

Each of the compounds, TiTe O' ZrTe O and SnTe O was prepared in the manner just described, wherein the firing temperature was held both at 600 and 700 C. for hours in an air atmosphere. The reac tion was complete in the samples prepared at each of these temperatures, as shown by X-ray powder difiraotion data. Each of these compounds was found to he insoluble in water and dilute HCl. Each of the compounds was found to be stable up to a temperatureof about 750-800 C., but above this temperature after prolonged heating the telluriurn begins to oxidize and volatilize as T603.

The X-ray powder diffraction data are given in Table I, together with that for In O for comparison. It will be noted that each compound has a cubic body-centered 20 structure. The experimental densities listed were deter- ATe O mined pycnometrically.

TABLE I X-ray Powder Difiraction Data TlO1.3TeO1 Sn0;.3le0z 2104.31601 1 20;

11 III; hkl 11 III; a I/I; a UL hkl wherein A is selected from the group consisting of Ti, Bodwentemd cubic Structure, Mmortype (D Zr and Sn. These compounds have very desirable colors, Space group T5I 213 the titanium compound being a bright, lemon-yellow 55 color, the tin compound a cream-yellow, and the zirconi- Z= 8 8 s 1 =A.U 10.96 11.17 11. 2 0.01 10.11 um compound Ibemg whlte. In the compounds both A 92 M5 M1 3 3 and Te are in the +4 valence state. M 1 =9-/ -3 According to the invention, the new compounds can be P p y mlXlIlg Powders 0f z Wlth 2 and These new crystalline compounds find particular apcarrying out a solid-state reaction. To obtain the compounds in substantially pure form, the ratio of the oxides should be substantially 3: 1 of TeO to A0 but higher or lower ratios can be employed; however, when so employed the tellur-ite compounds are diluted with either Te0 or A0 as shown by X-ray powder difiraction data on samples prepared at other ratios. In preparing the compounds, the reactants are intimately admixed in finely divided power form; preferably the powders are 30 microns or smaller. The intimately admixed powders are compacted into a cohesive mass, and thereafter heat treated in a non-reducing, usually an oxidizing, atmos- Ingredient: Lbs. TiTe O or SnTe O or ZrTe O 300 Zinc oxide 25 Long-oil soya alkyd resin (60% nnvo1atile) 480 Mineral spirits 181 Cobalt naphthenate (6% Co) 3 Lead naphthenate (24% Pb) 3 Calcium naphthenate (4% Ca) 2 Total 994 As will be evident to those skilled in the art, various modifications of this invention can be made or followed in the light of the foregoing disclosure and discussion without departing from the spirit and scope of the disclosure or from the scope of the claims.

I claim:

1. A compound of the formula ATe O wherein A is selected from the group consisting of Ti, Zr and Sn.

2. A compound of the formula TiTe O 3. A compound of the formula SnTe O 4. A compound of the formula ZrTe O References Cited in the file of this patent UNITED STATES PATENTS 2,008,753 Downing et al July 23, 1935 10 2,534,562 Thomsen Dec. 19, 1950 2,721,117 Schoenlaub Oct. 18, 1955 2,962,346 Sindlinger et al Nov. 29, 1960 OTHER REFERENCES Mellor: Comprehensive Treatise on Inorganic and Theoretical Chemistry, Longmans, Green and Co., N.Y., Vol. XI, pages and 81 (1931). 

1. A COMPOUND OF THE FORMULA ATE3O3, WHEREIN A IS SELECTED FROM THE GROUP CONSISTING OF TI, ZR AND SN. 